Season 2 of ABC's 'Mistresses' kicks off with ratings essentially even with its premiere last year

ABC's"Mistresses" returned for the debut of its second season Monday night and posted ratings that were essentially even with its series premiere last year.

The Season 2 opener of the drama about four girlfriends with turbulent lives averaged 4.48 million viewers overall and a rating of 1.2 among key 18- to 49-year-olds, according to early numbers from Nielsen.

That's flat with the series premiere in 18-49 and up 2% in total viewers. The season opened after an episode of "The Bachelorette" that rose week-to-week to a 1.7 in 18-49.

NBC's "American Ninja Warrior" was the highest rated show of the night in the key demo, up 19% from last week to a 1.9. Right behind was Fox's "24" reboot, which surged 20% from a week ago to a 1.8, while "MasterChef" was also up, hitting a 1.7.